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Prometheus
limitations related to factors like increased power supply,
ⓒKIOST
waterpressure,andunderwatercommunicationchallenges.
*Angularvelocity:Thechangeineachpositionperunittimeofarotatingobject.
▲ okdo’sseamountfeaturesrockformationsthoughttoresultfromprevious
HowWillUnmannedSubmersiblesBe
underwatervolcanicactivity.
UsedforFutureDokdoandEastSea
Undoubtedly, exploring the rugged seabed around Dokdo
Exploration?
presents challenges for unmanned submersibles. However,
prior to the introduction of unmanned submersibles,
(1)AdvancesintheExplorationoftheSpecialand
conducting research on Dokdo was even more daunting.
UnpredictableUnderseaTerrainofDokdo
Before the era of unmanned submersibles, investigations into
ThewatersaroundDokdoofferanideallocationfordeep-sea
deep-sea life around Dokdo relied on collection equipment
research due to the area’s unique topography. Dokdo features
like box-type bottom samplers. Unfortunately, these box-
a seamount structure, recognized for its significance in deep-
type bottom samplers, primarily used for collecting deep-sea
sea biodiversity, allowing researchers to observe the deep-
organisms,werelimitedintheirabilitytoreachthedepthsof
sea ecosystem across different layers along the steep slope.
thedeepsea.Theycouldonlycollectsmallandmedium-sized
According to Researcher Min, the seabed near the upper
organisms found near the surface of the deep sea and were
reaches of Dokdo exhibits a gently sloping terrain extending
unsuitableforuseinareaswithirregularrockformationsand
fromclosetoDokdotoadepthofapproximately200meters,
rocky debris like Dokdo. Furthermore, the act of collection
followed by a steep slope at the end of this flat area. Beyond
itself often disturbed or even destroyed the surrounding
this point, the depth plunges to 2,300 meters, leading to a
ecosystem since these samplers extended a bucket directly
flat seabed plain. This topographical characteristic classifies
to the seabed to gather samples. Therefore, the importance
Dokdo’s deep-sea terrain as a seamount. The upper flat
of unmanned submersibles in conducting visual data surveys
surface of this seamount structure lies at around 200 meters
cannot be overstated. In essence, even when studying seabed
deep, making it accessible for surveying with a small ROV.
topography, sedimentation, and marine mineral resources,
Therefore, precise seabed surveying in Dokdo involves
it was crucial to investigate precise topographical details,
creating a seabed map, determining survey lines in advance,
the specific locations of sediment layers, and the potential
and conducting safe surveys. However, the uneven and
quantities of mineral resources that traditional collection
seamount-like terrain of Dokdo presents challenges. Even
instruments could not adequately capture. Visual and precise
with careful examination, there are instances where deep-sea
survey data obtained through unmanned submersibles
camerasandsmallROVsmaysuddenlyencounterhillsorlose
offers critical insights for interpreting and analyzing the
equipment due to close proximity to the seabed. Navigating
environment.
thesteepslopesoftheseamountinDokdorequiresascending
from deep to shallow areas to allow for better control along
(2)Dokdo:TheFutureofDeep-SeaExplorationinKorea
the seabed surface and to avoid hazardous seabed terrain.
Korea’s initial exploration of Dokdo using an unmanned
BothROVsandAUVscandetectobstaclesusingsoundwaves
submersible occurred in 2007. This groundbreaking effort
infrontofthem,whichallowsforcontinuousmonitoringand
aimed to investigate the deep-sea ecosystem in the waters
investigation. Researcher Min explains, “When exploring the
surrounding Dokdo using ROVs. The ROV employed for this
seabed along Dokdo’s sloping terrain, researchers encounter
survey was the Swedish-manufactured “V8 SII,” featuring
a flat, muddy seabed, where medium-sized ROVs with a
a depth limit of 500 meters, weighing 60kg, a 10kg payload
minimumdepthratingof4,000meterscaneffectivelyconduct
capacity, a maximum speed of 3 knots, two high-brightness
investigations.”
29
OCTOBER 2023
limitations related to factors like increased power supply,
ⓒKIOST
waterpressure,andunderwatercommunicationchallenges.
*Angularvelocity:Thechangeineachpositionperunittimeofarotatingobject.
▲ okdo’sseamountfeaturesrockformationsthoughttoresultfromprevious
HowWillUnmannedSubmersiblesBe
underwatervolcanicactivity.
UsedforFutureDokdoandEastSea
Undoubtedly, exploring the rugged seabed around Dokdo
Exploration?
presents challenges for unmanned submersibles. However,
prior to the introduction of unmanned submersibles,
(1)AdvancesintheExplorationoftheSpecialand
conducting research on Dokdo was even more daunting.
UnpredictableUnderseaTerrainofDokdo
Before the era of unmanned submersibles, investigations into
ThewatersaroundDokdoofferanideallocationfordeep-sea
deep-sea life around Dokdo relied on collection equipment
research due to the area’s unique topography. Dokdo features
like box-type bottom samplers. Unfortunately, these box-
a seamount structure, recognized for its significance in deep-
type bottom samplers, primarily used for collecting deep-sea
sea biodiversity, allowing researchers to observe the deep-
organisms,werelimitedintheirabilitytoreachthedepthsof
sea ecosystem across different layers along the steep slope.
thedeepsea.Theycouldonlycollectsmallandmedium-sized
According to Researcher Min, the seabed near the upper
organisms found near the surface of the deep sea and were
reaches of Dokdo exhibits a gently sloping terrain extending
unsuitableforuseinareaswithirregularrockformationsand
fromclosetoDokdotoadepthofapproximately200meters,
rocky debris like Dokdo. Furthermore, the act of collection
followed by a steep slope at the end of this flat area. Beyond
itself often disturbed or even destroyed the surrounding
this point, the depth plunges to 2,300 meters, leading to a
ecosystem since these samplers extended a bucket directly
flat seabed plain. This topographical characteristic classifies
to the seabed to gather samples. Therefore, the importance
Dokdo’s deep-sea terrain as a seamount. The upper flat
of unmanned submersibles in conducting visual data surveys
surface of this seamount structure lies at around 200 meters
cannot be overstated. In essence, even when studying seabed
deep, making it accessible for surveying with a small ROV.
topography, sedimentation, and marine mineral resources,
Therefore, precise seabed surveying in Dokdo involves
it was crucial to investigate precise topographical details,
creating a seabed map, determining survey lines in advance,
the specific locations of sediment layers, and the potential
and conducting safe surveys. However, the uneven and
quantities of mineral resources that traditional collection
seamount-like terrain of Dokdo presents challenges. Even
instruments could not adequately capture. Visual and precise
with careful examination, there are instances where deep-sea
survey data obtained through unmanned submersibles
camerasandsmallROVsmaysuddenlyencounterhillsorlose
offers critical insights for interpreting and analyzing the
equipment due to close proximity to the seabed. Navigating
environment.
thesteepslopesoftheseamountinDokdorequiresascending
from deep to shallow areas to allow for better control along
(2)Dokdo:TheFutureofDeep-SeaExplorationinKorea
the seabed surface and to avoid hazardous seabed terrain.
Korea’s initial exploration of Dokdo using an unmanned
BothROVsandAUVscandetectobstaclesusingsoundwaves
submersible occurred in 2007. This groundbreaking effort
infrontofthem,whichallowsforcontinuousmonitoringand
aimed to investigate the deep-sea ecosystem in the waters
investigation. Researcher Min explains, “When exploring the
surrounding Dokdo using ROVs. The ROV employed for this
seabed along Dokdo’s sloping terrain, researchers encounter
survey was the Swedish-manufactured “V8 SII,” featuring
a flat, muddy seabed, where medium-sized ROVs with a
a depth limit of 500 meters, weighing 60kg, a 10kg payload
minimumdepthratingof4,000meterscaneffectivelyconduct
capacity, a maximum speed of 3 knots, two high-brightness
investigations.”
29
OCTOBER 2023
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